Multiple feedings enhance the growth performance and feed efficiency of juvenile Litopenaeus vannamei when fed a low-fish meal amino acid-supplemented diet

Nunes, Alberto Jorge Pinto; Sabry‐Neto, Hassan; Silva, Francisco Hélio Pires da; Oliveira-Neto, Adhemar Rodrigues de; Masagounder, Karthik

doi:10.1007/s10499-018-0330-7

Cited by 21 publications

(17 citation statements)

References 25 publications

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“…Shrimp of 0.98±0.10 g (mean ± standard deviation; n = 9,996) were stocked under 127 animals m −2 (204 shrimp tank −1 ). They were fed daily, 10 times a day with an automatic feeder (described in Nunes et al, 2019) that operated between 07.00 and 17.00 h. Animals were fed a grower commercial shrimp feed containing a minimum of 38% crude protein (Density 38, Neovia Saúde e Nutrição Animal Ltda., São Lourenço da Mata, Brazil). Meals were adjusted daily following an estimated weight gain of 100 mg day shrimp −1 and an estimated 0.5% weekly drop in shrimp survival.…”

Section: Methodsmentioning

confidence: 99%

Utilization of rice byproducts as carbon sources in high-density culture of the Pacific white shrimp, Litopenaeus vannamei

Leite

Melo

Nunes

2020

Revista Brasileira De Zootecnia

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Aquaculture Full-length research articleUtilization of rice byproducts as carbon sources in high-density culture of the Pacific white shrimp, Litopenaeus vannameiABSTRACT -This study was conducted to evaluate the effect of rice byproducts on water quality, microbial community, and growth performance of L. vannamei juveniles. Shrimp of 0.98±0.10 g body weight (BW) were reared in 49 tanks of 1.5 m 3 under 127 animals m −2 for 77 days. Rice bran, rice grits, and rice hulls were mixed into five different fertilizers varying their fiber content (90, 110, 150, 200, and 250 g kg −1 ) and compared against sugarcane molasses (MO) and unfertilized tanks (UNF). Rice byproducts and MO were applied in water three times a week at a fixed rate of 4.5 g m −3 . Water salinity, pH, temperature, and dissolved oxygen reached 43±2 g L −1 , 8.03±0.32, 30.2±0.90 °C, and 5.03±0.53 mg L −1 , respectively. Settleable solids (SS) were higher in tanks fertilized with rice byproducts (from 2.5±1.0 to 3.1±1.1 mL L −1 ) and MO (3.4±1.0 mL L −1 ). Total ammonia nitrogen (0.19±0.09 mg L −1 ), nitrite (5.97±2.04 mg L −1 ), and nitrate (1.29±0.48 mg L −1 ) were kept low without any significant differences among treatments. The concentration of heterotrophic bacteria and fungi was significantly higher in rice byproducts compared with MO. Water fertilization had no effect on final shrimp survival (85.5±9.5%), weekly growth (0.72±0.11 g), and feed conversion ratio (1.59±0.10). Tanks treated with rice byproducts, except with 90 g kg −1 fiber, resulted in a higher final shrimp BW (from 9.04±1.56 to 9.52±1.89 g) compared with MO (8.75±2.14 g) and UNF (7.74±1.48 g). Gained yield and feed intake were significantly higher for tanks treated with rice byproducts than with UNF. A mix of rice byproducts can be equally or more effective as carbon sources to shrimp culture than MO.

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Section: Methodsmentioning

confidence: 99%

Utilization of rice byproducts as carbon sources in high-density culture of the Pacific white shrimp, Litopenaeus vannamei

Leite

Melo

Nunes

2020

Revista Brasileira De Zootecnia

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“…Growth performance was evaluated in 56 outdoor circular tanks of 1 m 3 (bottom surface area of 1.02 m 2 , 0.74 m height, and 1.14 m diameter), allowing seven replicate tanks for each experimental diet. Shrimp of 0.99 ± 0.08 g ( n = 5,712) were stocked under 100 animals/m 2 and fed 10 times during daylight using an automatic feeding dispenser (Nunes, Sabry‐Neto, Silva, Oliveira‐Neto, & Masagounder, ). Shrimp were fed following a feeding table, according to the equation MM = 0.0931BW 0.6200 (Façanha, Sabry‐Neto, Figueiredo‐Silva, Oliveira‐Neto, & Nunes, ; Nunes et al, ; Nunes & Parsons, ), where MM is the maximum amount of feed (g) that can be eaten daily by one individual of a specific BW.…”

Section: Methodsmentioning

confidence: 99%

Section: Shrimp Growth Performancementioning

confidence: 99%

Feed preference and growth response of juvenile Litopenaeus vannamei to supplementation of marine chemoattractants in a fishmeal‐challenged diet

Nunes

Sabry‐Neto

Oliveira‐Neto

et al. 2019

J World Aquaculture Soc

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This study compared the feed preference and growth response of Litopenaeus vannamei to chemoattractants. A diet with 3% fishmeal was supplemented with either 3% salmon meal (POS), 3% soy protein concentrate (NEG), 3% krill meal (KRM), 3% squid meal (SQM), 3% shrimp head meal (SHM), 3% shrimp meal (SM), 3% squid liver meal (SLM), or 5% liquid sardine hydrolysate (SAH). Shrimp with a body weight (BW) of 0.99 ± 0.08 g were stocked at 100 animals/m2 in 56 tanks of 1 m3 and fed 10 times daily for 74 days. Feed preference was evaluated by feeding shrimp of 10.87 ± 1.82 g in excess twice a day for 10 days in two separate feeding trays allocated in 50 tanks of 0.5 m3. Survival reached 93.3 ± 5.80% and was unaffected by supplementation. Final BW was the highest for shrimp fed the KRM‐supplemented diet (11.97 ± 0.93 g), followed by POS (11.11 ± 0.77 g) and SQM (11.01 ± 1.17 g). Diets SHM, SM, SLM, and NEG showed a lower shrimp BW than POS, but were not statistically different among them. Shrimp fed the SAH diet achieved the lowest BW (10.06 ± 1.02 g). The highest gained yield was obtained with diets KRM and POS. No statistical difference was observed in shrimp yield among other diets. The lowest feed conversion ratio (FCR) was achieved with shrimp fed KRM (1.31 ± 0.05) when compared to diets SHM (1.47 ± 0.05), SAH (1.47 ± 0.07), and SLM (1.45 ± 0.17). Two‐by‐two comparisons indicated that shrimp preferred SHM and KRM, except when these were compared to SQM and SLM. No difference in feed preference was found between diets with SQM and SLM. SAH was the least preferred raw material in all comparisons. Results indicated that KRM acts as a powerful feeding effector and growth enhancer in fishmeal‐challenged diets for whiteleg shrimp. A dietary supplementation with 3% KRM is more effective than the same dose of any other chemoattractant evaluated.

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“…Feed conversion ratio and apparent feed intake (AFI, g of feed delivered divided by the number of stocked shrimp) were determined on a DM basis. Calculations followed equations presented by Nunes et al (2019b).…”

Section: Methodsmentioning

confidence: 99%

Increasing feed allowance in low-fish meal diets allows for a reduction in dietary methionine for juvenile Litopenaeus vannamei raised in green-water tanks

et al. 2019

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A 10-week study was conducted to evaluate the effect of feed allowance and graded levels of dietary methionine (Met) on growth performance of Litopenaeus vannamei. Juvenile shrimp of 1.83±0.14 g were stocked in 42 outdoor green-water tanks of 1 m 3 under 120 shrimp m −2. Animals were fed under two feed allowances, regular and 30% in excess. Five diets with 30 g kg −1 fishmeal were designed to contain 318±2 g kg −1 crude protein and a minimum amount of protein-bound Met. To achieve graded levels of dietary Met, a control diet with 4.6 g kg −1 Met or 8.9 g kg −1 methionine + cysteine (M+C) was supplemented with 1.2, 2.2, 3.2, and 4.2 g kg −1 of DL-methionyl-DL-methionine to result in total dietary Met of 5.6, 6.9, 7.9, and 9.2 g kg −1 (10.0, 11.2, 12.1, and 13.5 g kg −1 M+C, respectively). A final survival of 86.5±3.6% was reached with no significant influence from feed allowance or dietary Met. Feed inputs significantly affected apparent feed intake, weekly shrimp growth, final body weight (BW), and gained yield. Larger meals and a higher dietary Met had no impact on feed conversion ratio. There was a significant interaction between feed allowance and Met over shrimp BW. By feeding animals in excess, BW was enhanced at 6.9 g kg −1 Met. A dietary Met of 7.9 g kg −1 was required to achieve a maximum BW under a regular feed allowance. Thus, shrimp required less amounts of dietary Met to maximize BW when higher feed inputs were delivered. Our findings demonstrate a sparing effect of dietary Met for L. vannamei when a higher feed allowance is adopted. Shrimp farmers should consider adjusting feed allowance to dietary Met to maximize shrimp growth performance and yield.

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Multiple feedings enhance the growth performance and feed efficiency of juvenile Litopenaeus vannamei when fed a low-fish meal amino acid-supplemented diet

Cited by 21 publications

References 25 publications

Utilization of rice byproducts as carbon sources in high-density culture of the Pacific white shrimp, Litopenaeus vannamei

Utilization of rice byproducts as carbon sources in high-density culture of the Pacific white shrimp, Litopenaeus vannamei

Feed preference and growth response of juvenile Litopenaeus vannamei to supplementation of marine chemoattractants in a fishmeal‐challenged diet

Increasing feed allowance in low-fish meal diets allows for a reduction in dietary methionine for juvenile Litopenaeus vannamei raised in green-water tanks

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